Upper Northwest Interceptor Section 9 (UNWI 9) and Associated Northeast Area (NEA) Relief Projects

• Newsletter (Spring 2008) (646K pdf*)
• Newsletter (Summer 2007) (401K pdf*)
• Newsletter (Fall/Winter 2005) (1,651K pdf*)
• Newsletter (June 10, 2005) (799K pdf*)
• Fact Sheet (94K pdf*)

The sewer projects are a joint effort between SRCSD and Sacramento Area Sewer District, formerly known as CSD-1. SRCSD, the district responsible for providing wastewater conveyance, treatment and disposal, will own and operate the UNWI 9 project. Sacramento Area Sewer District is the district responsible for the operation and maintenance of the smaller pipes and pumping stations that collect local wastewater.

Together, the districts maintain and operate sanitary sewers in the unincorporated areas of Sacramento County; the cities of Citrus Heights, Elk Grove and Rancho Cordova and portions of the cities of Folsom and Sacramento.

• The UNWI 9 section of the project includes construction of a new interceptor pipeline along Auburn Boulevard and Old Auburn Road, from approximately Van Maren Lane east to Fair Oaks Boulevard.
• The NEA-1 section of the project includes the construction of a trunk sewer pipeline along Oak Avenue, between Fair Oaks Boulevard and Hazel Avenue, and a section of pipeline along Fair Oaks Boulevard, between Oak Avenue and Old Auburn Road.
• The NEA-2 section of the project includes construction of a section of pipeline along Old Auburn Road between Fair Oaks Boulevard and Robert Creek Court.

The original project design included gravity interceptors, force mains and two pumping stations. However, the Districts evaluated cost, engineering and public outreach considerations among several alternative alignments. Based on these evaluations, the gravity approach was selected, which eliminated the need for both pumping stations and force mains.

The new sewer improvements are needed to meet existing and future demands on the local sewer system by providing relief capacity to the existing system and reducing the risk of potential sanitary sewer overflows during severe wet weather events. Construction of this project will enable sewer facilities to operate properly, meet capacity requirements and avoid possible sewer backups.

Fees collected from developers will fund this project. Monthly sewer bills will not be increased due to this project.

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